<template>
	<div>
		<!-- 面包屑 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>添加商品</el-breadcrumb-item>
		</el-breadcrumb>

		<el-card>
			<el-alert title="添加商品信息" type="info" center show-icon :closable="false">
			</el-alert>
			<el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
				<el-step title="基本信息"></el-step>
				<el-step title="商品参数"></el-step>
				<el-step title="商品属性"></el-step>
				<el-step title="商品图片"></el-step>
				<el-step title="商品内容"></el-step>
				<el-step title="完成"></el-step>
			</el-steps>
			<el-form :model="addForm" :rules="addRules" ref="addFormRef" label-position="top">
				<el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforTbaleave"
					@tab-click="tabClick">
					<el-tab-pane label="基本信息" name="0">
						<el-form-item label="商品名称" prop="goods_name">
							<el-input v-model="addForm.goods_name"></el-input>
						</el-form-item>
						<el-form-item label="商品价格" prop="goods_price">
							<el-input v-model="addForm.goods_price" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品重量" prop="goods_weight">
							<el-input v-model="addForm.goods_weight" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品数量" prop="goods_number">
							<el-input v-model="addForm.goods_number" type="number"></el-input>
						</el-form-item>
						<el-form-item label="商品类别" label-width="100px" prop="goods_cat">
							<!-- options 数据源 -->
							<el-cascader class="CateCascader" clearable expand-trigger="hover"
								v-model="addForm.goods_cat" :options="CateList" :props="CascaderCateProp"
								@change="CatehandleChange"></el-cascader>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品参数" name="1">
						<el-form-item v-for="(item,index) in manyTableData" :key="item.attr_id" :label="item.attr_name">
							<el-checkbox-group v-model="item.attr_vals">
								<el-checkbox border v-for="(item1,index1) in item.attr_vals" :label="item1"
									:key="index1"></el-checkbox>
							</el-checkbox-group>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品属性" name="2">
						<el-form-item v-for="(item,index) in onlyTableData" :key="index" :label="item.attr_name">
							<el-input v-model="item.attr_vals"></el-input>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品图片" name="3">
						<el-upload :action="uploadUrl" :on-preview="handlePreview" :on-remove="handleRemove"
							list-type="picture" :headers="headerObj" :on-success="handleSuccess">
							<el-button size="small" type="primary">点击上传</el-button>
							<div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
						</el-upload>
					</el-tab-pane>
					<el-tab-pane label="商品内容" name="4">
						<quill-editor v-model="addForm.goods_introduce"></quill-editor>
						<el-button type="primary" size="mini" @click="addFormDo">添加</el-button>
					</el-tab-pane>
				</el-tabs>
			</el-form>
		</el-card>
		<!-- 图片预览 -->
		<el-dialog title="图片预览" :visible.sync="picDialogVisible" width="30%" :before-close="handleClose">
			<img :src="previewURL" class="previewPic" />
		</el-dialog>
	</div>
</template>

<script>
	import _ from 'lodash'
	export default {
		data() {
			return {
				activeIndex: '0',
				addForm: {
					goods_name: '',
					goods_price: 0,
					goods_weight: 0,
					goods_number: 0,
					goods_cat: [],
					pics: [],
					goods_introduce: '',
					attrs: []
				},
				CateList: [],
				CascaderCateProp: {
					label: 'cat_name',
					value: 'cat_id',
					children: 'children'
				},
				addRules: {
					goods_name: [{
						required: true,
						message: '请输入商品名称',
						trigger: 'blur'
					}],
					goods_price: [{
						required: true,
						message: '请输入商品价格',
						trigger: 'blur'
					}],
					goods_weight: [{
						required: true,
						message: '请输入商品重量',
						trigger: 'blur'
					}],
					goods_number: [{
						required: true,
						message: '请输入商品数量',
						trigger: 'blur'
					}],
					goods_cat: [{
						required: true,
						message: '请输入商品数量',
						trigger: 'blur'
					}]
				},
				manyTableData: [],
				onlyTableData: [],
				uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
				headerObj: {
					Authorization: window.sessionStorage.getItem('token')
				},
				previewURL: '',
				picDialogVisible: false
			}
		},
		methods: {
			async getCateList() {
				const {
					data: res
				} = await this.$http.get('categories');
				if (res.meta.status != 200) {
					return this.$message.error("获取分类失败");
				}
				this.CateList = res.data;
			},
			CatehandleChange() {
				if (this.addForm.goods_cat.length !== 3) {
					this.addForm.goods_cat = [];
				}
			},
			beforTbaleave(activeName, oldAciveName) {
				if (oldAciveName == '0' && this.addForm.goods_cat.length !== 3) {
					this.$message.error("请先选择商品分类");
					return false;
				}
			},
			async tabClick() {
				if (this.activeIndex == '1') {
					const {
						data: res
					} = await this.$http.get(`categories/${this.addForm.goods_cat[2]}/attributes`, {
						params: {
							sel: 'many'
						}
					});
					if (res.meta.status !== 200) {
						return this.$message.error("获取动态参数失败");
					}
					res.data.forEach(item => {
						item.attr_vals = item.attr_vals.length == 0 ? [] : item.attr_vals.split(' ');
					})
					this.manyTableData = res.data;
				}
				if (this.activeIndex == '2') {
					const {
						data: res
					} = await this.$http.get(`categories/${this.addForm.goods_cat[2]}/attributes`, {
						params: {
							sel: 'only'
						}
					});
					if (res.meta.status !== 200) {
						return this.$message.error("获取静态参数失败");
					}
					this.onlyTableData = res.data;
				}

			},
			// 图片预览
			handlePreview(file) {
				this.previewURL = file.response.data.url;
				this.picDialogVisible = true;
			},
			handleClose() {
				this.previewURL = '';
				this.picDialogVisible = false;
			},
			handleRemove(file) {
				const path = file.response.data.tmp_path;
				const index = this.addForm.pics.findIndex((x) => {
					x.pic == path
				});
				this.addForm.pics.splice(index, 1);
			},
			handleSuccess(response) {
				//单文件上传
				const picInfo = {
					pic: response.data.tmp_path
				}
				this.addForm.pics.push(picInfo);
			},
			async addFormDo() {
				const form = _.cloneDeep(this.addForm);
				this.$refs.addFormRef.validate((valid) => {
					if (!valid) {
						return this.$message.error("请填写必要的信息");
					}

					this.addForm.goods_cat = form.goods_cat.join(',');
					this.manyTableData.forEach(item => {
						const newInfo = {
							attr_id: item.attr_id,
							attr_vals: item.attr_vals.join(',')
						}
						this.addForm.attrs.push(newInfo);
					})
					this.onlyTableData.forEach(item => {
						const newInfo = {
							attr_id: item.attr_id,
							attr_vals: item.attr_vals
						}
						this.addForm.attrs.push(newInfo);
					})
				});
				form.attrs = this.addForm.attrs;

				const {
					data: res
				} = await this.$http.post('goods', form);
				
				console.log(res)
				
				if (res.meta.status != 201) {
					return this.$message.error("添加商品失败");
				}

				this.$message.success("添加商品成功");
			}
		},
		created() {
			this.getCateList();
		}
	}
</script>

<style scoped>
	.el-steps {
		margin: 15px;
	}

	.el-tabs {
		margin-top: 30px;
	}

	.el-checkbox {
		margin: 0 10px 0 0 !important;
	}

	.previewPic {
		width: 100%;
	}
</style>
